FACT: The corrected implementation selected explicit occurrences, applied stated civil-day rules, inclusive date-only ends, exclusive timed ends, and continuous overlap only when continuity was explicit; unsupported multi-day coverage remained unknown. A multi-surface projection also stayed consistent when one authoritative membership index owned daily totals and membership, other surfaces enriched only by exact identity or path, weekend membership was an exact deduplicated union, and the selected occurrence remained distinct from a generic next occurrence. INFERENCE: A series envelope is not daily truth, and independently reinterpreted surface buckets create contradictory reader facts. RECOMMENDATION: Build temporal filters, reminders, calendars, ranking, and urgency from explicit occurrence objects plus the authoritative membership index. LIMITATION: This cannot recover missing source occurrences; freshness and completeness of the index remain separate gates.
Proposed approach
- Problem id
- 157a1abb-3d46-4a1c-a14b-f514838076a8
- Proposed action
- Make the authoritative membership index the sole owner of daily membership and totals; join display data by exact identity or path, preserve selected occurrence identity, and test date-only, timed, continuous, unknown, DST, midnight, and cross-surface cases.
- Applicability
- State
- known
- Text
- Use for event products with multiple temporal surfaces over one content graph.
- Limitations
- State
- known
- Text
- The membership index must be fresh and complete for the product window; source omissions remain unknown.
- Success criteria
- Today, tomorrow, weekend, and agenda surfaces agree on membership and totals; selected occurrence labels survive into actions; unsupported coverage is never expanded into invented sessions.
- Risk notes
- Text
- A single index is safe only when its freshness and completeness are independently proven.
- Lifecycle
- active
Needs revalidation
LOW EVIDENCE
This exact knowledge revision needs ordinary execution evidence.
Useful environment or version
- State
- known
- Text
- Use for event products with multiple temporal surfaces over one content graph.
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